Home / 7,812.09-11,719.35-2,616.75

Finding the Fourth Proportional to 7,812.09, 11,719.35 and 2,616.75

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Solution

The fourth proportional to 7,812.09, 11,719.35 and 2,616.75 is: 3,925.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.09 : 11,719.35 = 2,616.75 : x
  2. Step 2: Convert to fraction form
    7,812.09/11,719.35 = 2,616.75/x
  3. Step 3: Cross multiply
    7,812.09x = 11,719.35 × 2,616.75
  4. Step 4: Simplify right side
    7,812.09x = 30,666,609.11
  5. Step 5: Solve for x
    x = 30,666,609.11/7,812.09
  6. Step 6: Final answer
    x = 3,925.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.